Knocking over device for flat hosiery machines



April 30, 1935. K. R. LIEBERKNECHT 1,999,908

KNOCKING OVER DEVICE FOR FLAT HOSIERY MACHINES Filed Feb. 25, 1954 lllllll1l Q I g n lllllllIlllllllllll [*3 w k m g n 4 J 37 IHIIIHIHII IQUJHA I Patented Apr. 30, 1935 UNITED STATES PATENT OFFICE KNOCKING OVER DEVICE FOR FLAT HOSIERY MACHINES Karl Richard Lieberknecht, Oberlungwitz,

. Germany Application February 23, 1934, Serial No. 712,670

2 Claims.

vide a knocking over device for flat hosiery machines wherein the knocking over bits in addition to being vertically movable are also capable of horizontal movement for positively stripping the finished loops over the needle head so that in the presence of undue resistance, the loops are not tctirrn or distorted while being positively knocked .o

A further important object of the invention is to provide a knocking over device for flat hosiery machines wherein the knocking over bits are positively moved in a vertical direction and include a spring mounting permitting horizontal yielding movement between two abutments or stops, one of which is movable, that operates to permit horizontal yielding movement of the knocking over bit as soon as the knocking over resistance of the loops exceed the spring tension of the cushion mounting. v

with the above and other objects in view that will become apparent as the nature of the invention is better understood, the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing:- a Figure 1 is a fragmentary front elevational view of the knocking over mechanism;

Figure 2 is an end elevational view, partly in section of the knocking over mechanism as applied to a full fashioned machine; and

Figure 3 is a cross-sectional view taken on line 3-'3 of Figure 1, showing the cam lever andcam operated devices therefor to permit horizontal movement of the knocking over device.

For purposes of clarity, the frame work of the hosiery machine has been omitted and only the knocking over device illustrated with the operating means therefor, and the knocking over device including hooked knocking over bits as mechanism associated therewith for effecting both vertlcal and horizontal movement. Referring more in detail to the accompanying drawing, the reference character 5 designates a bed that carries hooked knocking over bits 6 and said bed 5 is carried by a frame I vertically movable between guides 8 secured to the machine center bed 9.

The support for the frame 1 includes a pair of legs II! respectively located adjacent opposite ends of the frame, the legs being threaded at their upper ends as at H for threaded reception in openings provided in a lower angle flange I2 on the frame I, the legs being retained in their adjusted positions by means of jam nuts l3 threaded thereon and engaged with the flange I2 as shown in Figs. 1 and 2 for the vertical adjustment of the frame and lmocking over bits 6 A knocking over shaft M to accomplish vertical movement of the frame I is journalled in suitable bearings of the machine frame (not shown) and carries a pair of laterally directed levers I5 fixed thereto and respectively associated with the legs l0, each lever l5 carrying a laterally directed pin l6 adjacent its free end providing a journal support for the arcuate strap hearing I! on the lower end of the leg l0. Springs Ilia between stationary guide 8 and frame I return frame I to lower position.

The operating means for the knocking over shaft It includes a cam shaft l8 having a cam disk l9 secured thereto and carrying a cam projection 20 to be engaged by the roller 2| journalled laterally upon a cam lever 22 that is fixed 1 as at 23 to the knocking over shaft M. The cam lever 22 is tensioned as at 24 to maintain engagement of the roller 2| with the cam wheel [9.

cam shaft l8, oscillatory movement is imparted to the knocking over shaft [4 that through the medium of the levers l5 and legs l0 imparts vertical movement to the frame I carrying the knocking over bits 6 against resistance of spring Illa. The vertical position of the frame I is controlled by adjustable legs lll that freely rest at their lower ends upon the pins l5 and have threaded engagement their upper ends with the, lower ends of the frame I, the legs being retained in their adjusted positions by means of the jam nuts l3. a

Horizontal movement of the knocking over bits is accomplished bymeans .of devices including a pair. of adjustable set screws 25 horizontally threaded through the bed 5 carrying the knockin over bits for engagement with the machine center bed 9. A knocking over shaft 26 has a pair of levers ZIextending laterally thereof re-. spectively adjacent opposite ends of the-frame 1 and each lever 21 has a-stop arm 28 secured to its free endas at 29 andextending. upwardly for engagement with the frame I forholding the frame. in position with the adjustable screws 25 engaged with the machine center bed as shown in Figure 2. The operating means for the knock 9 ing. over shaft 26 which may permit horizontal movement of the frame I and knocking over bits includes a cam lever 30 secured as at 3! to the It will therefore be seen that upon rotation of the knocking over shaft 28 with a laterally journalled roller 22 adjacent its free end that is engaged with the cam wheel 88 fixed to the cam shaft I8 and having a cam depression 84 as clearly shown in Figure 3, the free end of the cam lever 38 being tensioned by the spring 85 in a direction toward the cam wheel 88. A pin 36 projects outwardly of each end of the knocking over bed 5 and each pin 88 forms an anchor for one end of a tensioned spring 31 that is attached at its other end to a hook arm 38 projecting forwardly of the frame guide 8. Movement of the frame 1 and knocking over bits 8 in horizontal directions away from the machine center bed 9 under influence of the springs 31 is restrained by the stop .arms 28 as will be obvious from an inspection of Figure 2.

In the operation of the mechanism, the knocking over bits are given a vertical upward motion by means of the knocking over shaft I as the loops are caught coming oil the sinker noses as is usually practiced and well understood. Later, as the needles travel inwardly, the knocking over bits are pulled outwardly to insure the positive removal of the knocked oil loops from the needle heads. Should undue resistance be encountered, due to abnormally short loops, the springs 31 will be extended and injury to the fabric prevented. In this instance, the space between the'frame I and stop arms 28 is varied and the frame I will only follow the stop arms until the resistance of the fabric is greater than the tension of the springs 31.

From the above detailed description of the invention, it is believed that the construction and operation thereof will at once be apparent and while there is herein shown and described the preferred embodiment of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

1. In a knocking over device for flat hosiery machines, the combination of a comb of knocking over bits, a vertically and horizontally movable frame carrying said comb, means including a screw rod adjustably connected with the frame for adjusting the height to which theframe moves in a vertical direction, and spring devices associated with the frame for moving the frame in a horizontal direction and in a downward direction.

2. In a knocking over device for flat hosiery machines, the combination of a vertically and horizontally movable comb of knocking over bits, a frame carrying said comb, means including a screw rod adjustably connected with the frame for effecting movement of the frame and comb in a vertical direction, means for normally influencing the frame and comb in a downward direction, means for restraining horizontal movement of the comb, means for guiding the frame in its vertical movement, arms carried by the guiding means and projecting forwardly of the frame adiacent the lower end thereof and the means for tensioning the frame and comb in a downward direction comprising springs interposed between the guiding means and free ends of the arms.

KARL RICHARD LIEBERKNECHT, 

